A photograph of a boat seemingly floating through the sky has baffled the internet this week - is it magic? Or is it simply a clever optical illusion?
Scroll on to see for yourself...
Now, optical illusions will never cease to amaze us.
For decades now, these clever tricks of the eye have left us completely fascinated - if not a little confused.
Let's take a quick look at some of the best examples...
Can you see the hidden cat?
You can only see this optical illusion if you shake your head (I’m serious) 😂 https://t.co/WhtZ1b0r4t— Dr Michelle Dickinson (@Dr Michelle Dickinson)1547090916.0
If you zoom out on the original illusion, or look at a very small version of the image, the cat should become clear.
What color are the circles in this image?
A new Munker illusion, which I call confetti. All the dots in the background are the same color (RGB 250, 219, 172)… https://t.co/SjFqXWQmng— David Novick (@David Novick)1531924880.0
This colorful image went viral in 2018 after its creator, University of Texas professor, Dr. David Novick, shared it on Twitter.
Despite what you may see, it turns out all the circles are actually the same color. "The differences are subtle, though, and depend on the size of the image when it's viewed," Dr. Novick tweeted.
Who's wearing high heels here?
At first i thought he was wearing the heels https://t.co/GSqurm3AcE— Charles Joseph (@Charles Joseph)1527203181.0
In May 2018, a Twitter user posted a picture of 2 coworkers laughing and hugging - however, it looks like the guy in the photo is rocking a light blue shirt, white skinny jeans, and black heels, when it's infact the woman.
If you stare at this image for around thirty seconds, it will disappear before your very eyes.
Well, not really.
The image, which was posted by Dr. David McPhillips of Primary Eye Care Associates, is a result of a famous optical illusion called Troxler's fading circle.
Is it a hole in his arm? Or just a clever tattoo?
A photo of this tattoo went viral in 2018 after it was posted on the subreddit r/Damnthatsinteresting. It's not yet clear who the original artist behind the tattoo is, but it has fascinated thousands.
Does this floor need fixing, or is it just an illusion?
Amazing optical illusion at Casa Ceramica😍 (the floor is totally flat) https://t.co/lLPG684cBZ— Hanna Brus (@Hanna Brus)1614712542.0
This Twitter user shared a photo of this cleverly deceptive tiled floor designed by UK-based tile company Casa Ceramica - I wonder how many legs have been broken on this floor?
Another weird flooring illusion...
In September, Twitter account @WHS_Carpet - which specializes in calling out "bad carpets" - brought this disorienting photo to the internet's attention.
What color are these shoes?
THE REAL SHOE IS PINK & WHITE OKAY⁉️ The second pic was with flash & darkened, so it looks teal & gray. (depends on… https://t.co/4bXIeSw3Wc— alîsha (@alîsha)1507759237.0
In 2017, this shoe went viral after people started debating whether it was pink and white or gray and teal - a little like the second coming of The Dress debate from 2015, in which the internet could not agree on the true color of a bodycon dress.
How about the color of these strawberries?
2色法によるイチゴの錯視。この画像はすべてシアン色（青緑色）の画素でできているが、イチゴは赤く見える。 Strawberries appear to be reddish, though the pixels are not. https://t.co/Ginyhf61F7— Akiyoshi Kitaoka (@Akiyoshi Kitaoka)1488244057.0
This illusion was created by Japanese psychologist and professor, Akiyoshi Kitaoka - the color red had been completely removed from the image, yet people still see red strawberries.
Can you find the cat?
Originally posted by Reddit user, waterhauler, this simple photo went viral in 2016.
Hint: The ginger cat is sleeping on the center log.
What happened to Kendall Jenner's leg?
This star-studded photo of Kendall Jenner, Kylie Jenner, and Hailey Baldwin went viral in 2017 because of the absence of Kendall's left leg.
Where did it go?!
More missing leg drama...
Reddit user jr0d7771 posted this photo in 2016 along with the caption: "Find the middle girl's legs."
Again, where did they go?!
Is this girl underwater or not?
This little girl appears to be underwater at first glance - however, she also looks like she's jumping into the water, which makes no sense at all.
But, while the filtered light and air bubbles make it seem like the girl is underwater, her dry hair proves that she isn't.
A seemingly normal brick wall, right?
Well, if you look closely, there's a cigar wedged between the bricks.
Can you see it?
Is one train track bigger than the other?
My toddler's train track is freaking me out right now. What is going on here?! https://t.co/9o8bVWF5KO— Marc Blank-Settle (@Marc Blank-Settle)1459974903.0
Or are they actually the same size?
This version of a classic optical illusion went viral in 2016 when BBC presenter, Marc Blank-Settle, posted a video of it on Twitter.
Sand dunes or craters?
Like an Escher painting, sand dunes seem to reproduce the same shape indefinitely #Volare http://t.co/8VvKKnnWtN— Luca Parmitano (@Luca Parmitano)1375357628.0
European Space Agency astronaut, Luca Parmitano, took this photo of some sand dunes in 2013.
But why do the dunes in his picture look like craters?
Are these men stood on a flat floor? Or do they have insanely good balancing skills?
The floor of the Florence Cathedral has some kind of amazing optical illusion built into it [read more:… https://t.co/gWxtE4FFuA— Science Club (@Science Club)1614144024.0
The floor of the Florence Cathedral has been designed to look like a tunnel, despite it being completely flat.
Are the wheels really turning?
@JoshHochschild This is the sort of optical illusion that describes the reality we're dealing with. It appears that… https://t.co/ova7FbuvCD— Alison Pahlkotter (@Alison Pahlkotter)1614437426.0
This classic illusion appears to be moving at a first glance - but, upon closer inspection, it is simply a still image.
And as for the latest optical illusion?
https://t.co/YZhN8wpbRg— Crazy Optical Illusions (@Crazy Optical Illusions)1599195928.0
Well, as expected, it's got everyone talking.
Colin McCallum, a health and safety worker from Aberdeenshire, Scotland, shared a photo of a boat seemingly floating in the sky.
And, it's needless to say, people are seriously puzzled.
Here's the illusion in question.
Speaking to the Daily Mail, Colin said:
"When I first saw the boat, I had to do a double-take because I genuinely thought it was floating. Upon further inspection, however, I noticed that it was in fact just a remarkable optical illusion." He added:
"It was caused by a cloud formation closer to the shore which changed the color of the water closer to the land. The boat, being further away, was in a cloudless area and therefore the sky reflected the sea - making it look like the boat was floating."
So that explains it!